Machine for cutting slate, roofing tile, and the like



Dec. 29, 1931. G. F. NEUMANN, JR

MACHINE FoRfqUTTING SLATE, RooFING TILE, AND THE LIKE Filed April 9, 1951 E E a 5 E l g w ffm/ 9 JMJ/27mm? if;

Mfr/WW Patented Dec. 29, 1931 ,l erica GUSTAVE F. NEUMANN', JR., OF MILWAUKEE, WISCONSIN MACHINE FOR CUTTINGVSLVATE, ROOFING- TILE,V .AND THE LIKE Application mea Apn e, 1931". Yserial. No. 528,878.

rlhis invention pertains to a machine for cutting slate, rooiing'tile, and the like, and has primarily for its object to provide a machine adapted to mechanically out material of the foregoing character, whereas heretofore this has `been accomplishedy manual.

means, which has resulted in considerable breakage and Van uneven cut, due to the fact that the pressure exerted upon the cutting tools employed could not be regulatedV to the degree required. l Y

llllifn the above and other objects in View, whichwvill appear as the description proceeds, theinvention resi les in the novel construction, combination and'arrangement of parts substantially as her inafter described and more particularly del-ined by the appended claims, it being understood that such changes in the precise embodiment ofthe herein disclosed invention Amay be made as come within the scope ofthe claim.

In the accompanying drawings is illustrated one vcomplete example ofthephysical embodiment ot the present invention constructed according to the best mode sol far devised for the practical application oi the principles thereof.

Figure 1 is a side elevation ci' a machine constructedin accordance with the presentV invention, with pats broken Vaway and in section to mere clearly illustrate the structural details, and

Figure 2 is a transverse detailed sectional view taken on the line 2 2 of Figure 1.

Referring now more particularly to the accompanying drawings, the numeral 1 d-esignates a Jframe of suitable designto accommodate the mechanism required to carry out the present 4invention, and comprises the base 2 and an opposed laterally projecting arm 3 positioned above said base. Y Carried by the base 2 and the arm?) is a pair of op posed work-engaging tools e, preferably in the form oi Vchisels, which cooperate with 'n' each other, a manner to be hereinafter described, or cutting the work material positioned betweenv them.` The lower chisel or tool'li is adjustably mounted in a sleeve 5 which is threaded into the base 2 and held therein by a jam nut'G. The exposed end of the sleeve isilongitudinally slotted and provided with an exteriorly tapered thread for the `reception of the nut, whereby the chisel, Which is threaded Ywithin the sleeve, may be clamped in adjusted position.

The upper chisel 4 is mounted in the sleeve 8 similar in construction to the sleeve 5, eX- cept in that it is slidably mounted within aY bushing 9 carried by the arm 3. Threaded on theV upper end of the sleeve 8 is a head `1() provided with a Vflange for the reception of a coiled spring which surrounds the sleeve 8 and WorksV against the bushing 9 to nor mally hold the tool e inV raised position. It Will be noted that the upper chisel is adjustable Within the sleeve 8 in the same manner as provided for the lower chisel.

For the purpose of actuating the upper chisellv andcausing the same to engage the work W in cooperation with the lower chisel,

' the tappet 12 is provided which comprises an armi?) on the outer end of which is mounted a head'lnV adapted toengagethe head 1() carried bythe sleeve 8. Y o

The opposite end of he rod 13 is connected With a shaft :111, journaled in the frame `by' means of a universal coupling 15, and mountedv on the outer end of the shaft 14 is a gear 16 -meshing with the gear 17 carried on the stud 18, which stud is secured within the frame 1., Connected withy the gear 17 is a flywheel 19 that carries anoperating handle 20. Mounted on the rod 13, abutting the universal connectionl, is a bearing block 21 slidably mounted Within the vertical Vframe. extension 22. VThe bearing block 21 is provided vvith a lateral projection 23 adapted to engage the base of the extension 22, thus holding theI bearing block against longitudinal movement on the shaft 14. 'I

`Threaded into the frame extension 22is a crank 241 which carries a flanged head 25V which receives the spring 26 which Works against the bearingblock 21, thus serving to normally urge the tappet downwardly.

SecuredV on the rod 13 intermediate its ends isa cam 27 adapted to engage the adjustable stop 28 which is threaded to the arm 3 and lockedin its adjusted position by means of a jam nut. In-additionto the slotted frame IUD extension 22 which guides the bearing block 2l, the tappet is further held against lateral movement by a vertical U-shaped guide 29 carried by the arm 3.

Taking up the operation of the machine, the work lV is placed between the tools or chisels et, and the flywheel is then rotated by means of the handle 20, which operation, through the geared connection between the flywheel and the shaft le, will cause the latter to rotate which in turn will rotate the tappet rod 13.

is this takes place, the cam 27 working on the stop 28 will cause the tappet l2 to be oscillated in a vertical plane, the high spots of the cam 27 forcing the same upwardly against the spring 26 and the force of gravity which is materially increased by the weighted head 13 mounted on the free end of the tappet arm 13. As the upward movement of the tappettakes place, obviously the spring ll will cause the sleeve 8 and the upper chisels i to follow the head 13', and when the high portion of the cam 27 passes the stock 28, the tappct is dropped thus exerting a hammer blow on the upper chisel which, cooperating with the lower tool, will serve to cut the work material simultaneously upon opposite sides.

TFrom the foregoing description it will be pj arent that the force of the blow to be eX- erted upon the upper chisel 4t can be regulated in any desired degree by means of the crank 24 which adjusts the tension on the spring 26. `liurthermore, the lifting action exerted upon the tap-pet by means of the cam, can be regulated to the desired movement by means of the adjustable stop 28.

lt will be further seen that compensation for wear and sharpening of the tools, as well as accomniodating the machine to operate upon material of various thicknesses, is provided for any adjustment of the chisels within their respective sleeres.

lVhile l: have illustrated and described manual means for actuating the present invention, it will be quite obvious that the same may be driven by a motor, or other form of power, without dejiarting from the invention, or effecting its mode of operation.

From the foregoing it will be seen that a simple and inexpensive mechanism has been provided, which will rapidly and evenly cut material of various characteristics and thicknesses, and which will eliminate breakage, due to provision of means for nicely regulating and obtaining the exact degree of force required and depenclng upon the characteristics of material to be worked upon.

l claim: Y

l machine of the class described comprising a frame having a fixedly mounted member, a movable chisel carried by said frame and cooperating with said member, a revolubly mounted shaft slidably guided within said frame and having a striking portion for consin.

GUSTAVE F. NEUMANN, JR. 

